A company offers a cash rebate of $1 on each $4 package of batteries sold during 2007. Historically, 10% of customers mail in the rebate form.

A company offers a cash rebate of $1 on each $4 package of batteries sold during 2007. Historically, 10% of customers mail in the rebate form. During 2007, 6,000,000 packages of batteries are sold, and 210,000 $1 rebates are mailed to customers. What is the rebate expense and liability, respectively, shown on the 2007 financial statements dated December 31?a.